Palladium-catalyzed carbonylative annulation reaction of 2-(1-alkynyl)benzenamines: selective synthesis of 3-(halomethylene)indolin-2-ones.

Abstract

A novel and selective palladium-catalyzed carbonylative annulation process for the synthesis of 3-(halomethylene)indolin-2-ones was demonstrated. In the presence of PdX2 and CuX2, 3-(halomethylene)indolin-2-ones were selectively obtained from the carbonylative annulations of 2-(1-alkynyl)benzenamines with CO in moderate to good yields. 

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